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Sharp money in prediction markets: check the evidence

Inspect the evidence needed before attaching an expertise label to activity. Volume, a large position or a later price move does not establish that a participant is informed.

What participant evidence would be needed?

A price history records observations about a market. It does not identify a participant’s knowledge, expertise or intention. A large change, a large position or a later correct outcome cannot by itself establish that informed traders caused the activity.

A defensible participant analysis would need independently defined identities or cohorts, a documented classification method, a time period and observations connected to that method. It would also need to distinguish information available before an event from explanations formed after the result. None of those missing inputs can be inferred from this price-series form.

This view consequently keeps the evidence question visible without assigning an expertise label or presenting a participant ranking. Use movers for the narrower task of comparing observed price changes, or divergence for qualifying cross-venue quotes. Keeping those tasks separate prevents a descriptive calculation from becoming an unsupported claim about who traded or why a price changed.

A label needs independent evidence

A transaction record can show that activity happened. It does not establish the participant’s information, skill, intent or later performance. No verified participant taxonomy is connected to this view, so no account or cohort is characterized as informed.

Run the price series without a trader label

Paste your own observations as JSON, in the format set out on the price research page.

This page has no live price data. Paste your own price series to analyze it.

Sources and scope

Checked November 5, 2026.

Important information

In the United States, certain event contracts are offered through Designated Contract Markets (DCMs) subject to oversight by the Commodity Futures Trading Commission (CFTC). Regulatory arrangements and product availability differ between platforms and jurisdictions. CFTC oversight does not constitute approval or endorsement of any particular contract. Event contracts are derivatives products, not sports betting or gambling products, and are not licensed by any state gaming or gambling regulator.

Trading event contracts involves substantial risk of loss. You may lose some or all of the funds you use to trade. Past results do not guarantee future outcomes.

Nothing on this page constitutes investment, trading, or legal advice, or a recommendation to buy or sell any contract. Content is for general informational purposes only.